Disulfide stabilized DVD-Ig molecules

Abstract

The present disclosure provides a binding protein comprising: a polypeptide heavy chain comprising: VH1-(X1)n-VH2—CH (X2)y wherein VH1 is a first variable domain, VH2 is a second variable domain, CH is a constant domain, X1 represents an amino acid or peptide, X2 represents an Fc region, n is 0 or 1 and y is independently 1 or 2, and a polypeptide light chain comprising: VL1-(X1)n-VL2-C wherein VL1 is a first variable domain, VL2 is a second variable domain, C is a constant domain, X1 represents an amino acid or peptide and n is 0 or 1, wherein the heavy chain and light chain are aligned such that VH1 and VL1 form a first binding domain, and VH2 and VL2 form a second binding domain and wherein: there is a disulfide bond between VH1 and VL1, and/or there is a disulfide bond between VH2 and VL2, and use thereof in treatment.

Dependencies are inferred from the claim text.